The e-CALLISTO is a global network of frequency-agile solar radio spectrometers that was constructed in a collaboration between Swiss Federal Institute of Technology Zurich (ETH Zurich) and local host institutes. It is intended to monitor solar radio bursts 24 hours a day in frequency range between 45 MHz and 870 MHz. One of e-CALLISTO spectrometer was installed at Korea Astronomy and Space Science Institute (KASI) in 2007 October. The spectrometer gets signals from a horizontally polarized log-periodic antenna mounted on an automatic Sun-tracking system. Tracking status and data are monitored in Space Weather Monitoring Laboratory (SWML) of KASI in real time, and flare time data are transferred to ETH Zurich data archive daily. Using this spectrometer we obtained a couple of type II solar radio bursts on 2007 December 31, and found that these bursts are associated with a CME which occurred on the east limb.

• Su-Chan Bong(Korea Astronomy and Space Science Institute) Corresponding Author
• Yeon-Han Kim(Korea Astronomy and Space Science Institute)
• HeeSeon Roh(Department of Astronomy and Space Science, Kyung Hee University)
• Kyung-Suk Cho(Korea Astronomy and Space Science Institute)
• Young-Deuk Park(Korea Astronomy and Space Science Institute)
• Seonghwan Choi(Korea Astronomy and Space Science Institute)
• Ji-Hye Baek(Korea Astronomy and Space Science Institute)
• Christian Monstein(Institute of Astronomy, ETH Zurich)
• Arnold O. Benz(Institute of Astronomy, ETH Zurich)
• Yong-Jae Moon(Department of Astronomy and Space Science, Kyung Hee University)
• Sungsoo S. Kim(Department of Astronomy and Space Science, Kyung Hee University)